\begin{tabular}{lcccccc} \hline
 & (1) & (2) & (3) & (4) & (5) & (6) \\
 & OLS & cox & OLS & cox & OLS & cox \\
 & First & First & First & First & First & First \\
 & terrorist & terrorist & claimed & claimed & unclaimed & unclaimed \\
VARIABLES & attack & attack & attack & attack & attack & attack \\ \hline
 &  &  &  &  &  &  \\
Drone strike killing leader & -13.15 & -0.0505 & -41.56 & 0.354 & 22.10 & 0.318 \\
 & (36.19) & (0.283) & (32.45) & (0.314) & (29.67) & (0.248) \\
Constant & 61.78*** &  & 99.14*** &  & 20.40 &  \\
 & (12.34) &  & (11.06) &  & (10.65) &  \\
 &  &  &  &  &  &  \\
Observations & 44 & 44 & 44 & 44 & 39 & 39 \\
R-squared & 0.003 &  & 0.029 &  & 0.058 &  \\
Number of groups & 5 &  & 5 &  & 4 &  \\
Group FE & YES & NO & YES & NO & YES & NO \\
 Stratified on group & NO & YES & NO & YES & NO & YES \\ \hline
\multicolumn{7}{c}{ Clustered (group) standard errors in parentheses} \\
\multicolumn{7}{c}{ * p$<$0.1 ** p$<$0.05 *** p$<$0.01} \\
\end{tabular}
